Floor-surfacing machine.



R. F. UPPERGUE.

FLOOR SURFAGING MACHINE. APPLICATION FILED JULYQ, 1910. 1 5 1 ,467 Patented Jan. 28, 1913.

2 SHEETS-SHEET 1.

6 Q P y 9 a R. F. UPPERGUE.

FLOOR SURFAGING MACHINE.

APPLICATION FILED JULY 9, 1910.

Patented Jan. 28, 1913.

2 SHEETS-SHEET 2.

are r. UPPERCUE, or HAYWOOD, ILLINoIs.

FLOOR-SURFACING MACHINE.

roamed.

Specification of Letters Patent.

- Patented Jan. 28, I913.

' Application filed July 9, 1910. Serial No. 571,250.

To all whom it may concern:

Be it known that I, RICHARD F. Urrnnoon,

'a resident of Maywood, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Floor-Surfacing Machines, of which the following is a full, clear, and exact descri tion.

The invention relates to floor-sur acing machines anddesigns to provide an improved machine which is simple in construction and may be conveniently operated on a floor.

In floor-surfacing machines in which a motor-driven drum is employed, the tractile force off-the surfacing roll engaging the floor has, been utilized to propel the machine under control of a push-bar by which the operator can manually move the machine about. In the operation of such machines, when-the drum is pressed against the floor, the tractile force is suficient to propel the machine faster than desirable for proper resurfacing and it is necessary for the operator to hold back the machine, which requires considerable strength and tires the operator, and for that reason, in many instances, a machine embodying positivelydriven mechanism for driving the carryingwheels at desired speed, is preferred.

The present invention designs to provide an improved machine in which mechanism for driving traction-wheels may be dispensed with, and in which the operator can readily control the propulsion of the ma chine,.without the necessity of overcoming the excessive tractile force of the surfacingdrum by manual force. This result is attained by the employment of a retarding device applied to hold and control the rotation of the carrying-wheels.

In the drawings: Figure l is a side elevation of a machine embodying the invention. Fig. 2 is a plan. Fig. 3 is a central longitudinal section. Fig. A is a rear elevation,

arts being shown in section. Fig. 5 is a etail View of the bearing for the surfacing drum. i

The machine comprises a carriage or truck A, which has side-frames a which are cross-connected by a plate a and bar a Caster-wheels B support the front end of the truck and an axle c is mounted in bearings a secured to plate a and in the sideframes a ofthe truck. Carrying-wheels C are rigidly secured to the axle c. A handle Kfor. manually shifting the machine, is socured to the truck by bars Z0, which extend to the outer sides of the truck-sides a respectively. Bolts is", extending through slots is in said bars, serve 'to fixedly hold-the handle-bars in operative position and to perm t it to be swung into position over the machine for convenience in storage or trans portatlon.

A tilting-frame D is pivotally sustained by the truck A and has trunnions d mounted in journals a on the sides of the truck. This tilting-frame D carries the surfacingdrum E at its front and a motor F for drivmg the drum is sustained on the top of said frame. This frame is tiltable so that the surfacingdrum carried thereby may be raised or l0\ ered into contact with or away from the fl or, as desired in the operation of the machine, and so that the desired pressure may be applied to said drum in operating it over a floor.

The surfacing-drum E may be of any suitable construction as well understood in the art. The shaft e of the drum is journaled in bearing-blocks 6, each of which is mounted to slide in a suitable guide or way formed in a bracket 6 secured to the sides of frame D respectively. A spring h is interposed between each of the bearing-blocks e and an adjusting-screw h which is mounted in-a removable top-bar e of the bracket 6 Each bearing-block e is provided with studs'e which slides in grooves e in its bracket 6 to permit the drum and its shaft to tilt or yield transversely in the frame D, so that in operation, the roll may adjust itself laterally to any inequalities of the floor. The surfacing-drum is removably held in the tiltable frame D so that it may be quickly and conveniently replaced by a brush or other tool when desired. The pressure of each cushion spring h, may ried by screw h, and the latter has-rotatably connected to its lower end, a bearing plate I). for the spring 71.. The upper end of said spring is secured to said plate h by having its'upper end extended through an eye 72. in said plate and the lower end is similarly connected to the bearing-block a so that when the top-bars 6 which are Socured to brackets c by bolts, are removed, the adjusting-screws and their spring-connections and the bearing-blocks, may be quickly removed with the drum and its.

shaft.

The surfacing drum E is operated at a be vatends to propel the machine too fastv to sur- .high speed and this causes thesame, when pressed into contact with the floor, to propel the machine forwardly too fast to surface shaft 6, a chain f and a sprocket-wheel ft.

secured to the shaft f on motor F. Usually, an electric-motor is employed for driving the surfacing-drum and hem driven at a high speed, the tractile force of the drum face the floor, particularly when the truckwheels are not driven at slow speed. To avoid .the necessity upon the part of the operator to hold the machine back a ainst the tractile force of the surfacing rum, by

-manual force applied to'the handle, a retarding device is provided, which, when applied to the carrymg-wheels C of the truck, will cause these wheels to resist the tractile force of the drum and retard the machine. This retarding device consists of a drum or pulley G secured to the axle 0 of the carrylng-wheels,a resilient friction-band g which is secured 'to a stirrup g which is, rigidly secured to the journals (1 of the truck, a rod 9 and a hand-lever g disposed adjacent the propellin handle K. Lever g is pivoted to the uprig t bar is of the handle K at g, and is provided with a' segmental slotted portion by which a screw 9 is adapted to hold the hand-lever and its connections in assi ed positions, so that by manipulation of t e hand-lever, the brake-band 9 may be applied with desired pressure to the drum G to overcome the excessive tractile-force of the surfacing drum. and thus the speed of travel of the machine over the floor may be regulated to a nicety, without providing driving-mechanism for the carrying-wheels and without imposing u on the operator the duty of manua ly retar ing the rogress of the machine against the tractile f crce of the surfacing drum.

I A suction-fan L of any suitable construction, is mounted within the frame D and be- 1 low the top of said frame. A shell Z is extended around the fan-casing and forwardly to a point adjacent the surfacingdrum to provide an enlarged chamber or duct Z through which" the cuttings and dust will be drawn into the fan. A tapered inlet Z is rovided for directing the material to the m which discharges the dust through an exhaust-duct Z 'into a suitable collector Z. A hood Z is pivoted, as at l, to the frame D, to direct the cuttings from the floor into chamber P. To prevent the cuttings from being directed beneath the machine, without bein removed, a forwardly and downwar y extending plate Z is secured to the front edge of shell Z and a flexible strip 1,

v such as felt or rubber, is secured to the front edge of said plate and is adapted to engage the floor to catch the cuttings and dust and directthem into the chamber l where the I suction of the fan will carry them off. The fan is driven from the motor F by a belt 2* which is driven by a pulley fon the motorsblags; f and drives a pulley 1 on the fans a In" practice, it is fr guently desirable l raise and lower the sur acing-drum to render it inoperative or operative, or to. vary the pressure of the drum on the floor. This. adjustment is eflected by tilting the frame D .in the trucks A to raise or lower the front end of the frame which carries the surfacing-drum. The mechanism for tilting said frame to adjust the surfacing-drum comprises a hand-wheel M which is secured to the upper end of a shaft m, which is provided with a screw-thread engaging ascrew threaded bracket m which is pivotally held in the tiltable frame D by a sectional rod m The lower end of shaft m is connected by a pin and groove m to a bracket m, in which a spring-bar m is secured. This bar m is bowed or arched and its terminals extend through slots m in the sides of truck A. Resultantly, this mechanism serves to hold the frame D in assigned position and by adjustment of hand-wheel M the frame may be tilted to raise or lower the drum carried by said frame. The spring-bar m provides a slightly yielding connection between the tilt-ing-frame and the truckfor exerting a pressure against the frame D to hold the surfacing-drum on the floor, while permitting it to yield slightly in either direction when necessary in passing over uneven surfaces or obstructions and the springs h permit one end of the drum to yield upwardly independently of the other if necessary when the surfacingroll is traveling over a laterally uneven surface. The tension of the springs It may be adjusted by screws h and by manipulation of handwheel M, the pressure of the surfacingdrum on the floonmay be regulated. to a nicety and by operation of'the same wheel, the surfacing-drum may be thrown out of contact with the floor when desired.

A tube N is secured to the top of the frame of motor F by a bracket n and a clamp-screw n and this tube is adapted for the leading-in wires or conductors for the electrical motor so that, as the machine is being propelled on a floor, the wires will erator at the rear of the machine, may beturned to raise the rear end of the frame D, to swing the latter about its pivotal con nection with the truck, and to lower the surfacingdrum at the front thereof. lhe tractile force of the surfacing-drum will propel the machine and by adjusting the hand-lever 9 the advance of the machine may be retarded to prevent the surfacingdrum from propelling the machine too rapidly. By adjustment of hand-wheel M, the pressure of the drum on the floor may be regulated to a nicety.

The invention is not to be understood as restricted to the details shown and described, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a floor-scraping machine, the combinationof a truck provided with carryingwheels, a combined surfacingdrum and propelling means, a frame carrying said drum, a motor for driving said drum, and means for retarding the propulsion of the machine due to the tractile force of said drum.

2. In a floor-surfacing machine, the com-' bination of a truck provided with carryingwheels, a combined surfacing -drum and propelling. means, a frame carrying said drum and pivoted to the truck to vary the pressure of said drum upon the floor, a motor for driving said drum, and adjustable means for retarding the carrying-wheels of the truckto regulate the propulsion of the machine due to the tractile force of said drum.

3. In a floor-surfacing machine, the combination of a truck, carrying-wheels for said truck, a frame tiltably mounted on said truck, a surfacing-drum mounted in said tilting-frame, a spring-bar applied-between said truck and frame, and means connected to said bar and using the same as a fulcrum for raising and lowering said frame.

4. In a floor-surfacing machine, the combination of a truck, carrying-wheels for said truck, a --frame tiltably mounted in said truck, a surfacing-drum mounted in said tilting-frame, a spring-bar applied between said truck and frame, and a shaft rotatably connected to said spring-bar and using the same as a fulcrum, said shaft being in screwthreaded engagement with said tilting frame for adjusting the latter vertically.

' RICHARD F. UPPEROUE.

Witnesses: I

HILDEN C. PETERSEN, FRANK W. BEMM. 

